Need help in writing a vbscript

Hi,
I need help in wring a vbscript. I have serached for the vbscript on the net, but could not find any.
I need to add a file to an msi using vbscript. - That's the requirement.
For this I have done the following with the help of vbscript.
1. With the insert statement I inserted a new copmonent in the FeatureComponent Table.
2. Now the next thing I did is, I inserted a new row in the File table using insert statement again. The file is uncompressed.
3. Since the file is a non-version file I also added a row in the MSIFileHash table.
4. Also, now added the Component in the component table.
After doing this I am able to see the chnages in the mst, however whrn I try to install it I get an error 2725 (Invalid database tables).
Can somebody please post a vbscript which can add a file to an msi?

Hi All,
Thanks for all your responses.
Yes, It is not so easy. I never said it was.  Thanks for pointing out Orca. We use Orca on a daily basis.
What exactly I am looking at, is this.
We have some standard applications which needs to be repackaged every month. The repackaging process is same and does not change at least for these packages. So I was actually looking at automating these things.
What I did so far.
First we have created an object for Windows installer. I have then taken a copy of the original msi and then opened the database of this temporary msi database in transact mode. Once the database is opened we can use select, insert, update
and delete statements to update the database.  
I could successfully add a registry to the msi. The component was also added successfully to the component table. I also could make changes to the Property table.
The tricky part comes with the addition of file to the file table.
The addition of file requires the following steps.
1. Add a new row to the file table. This can be done with the Insert statement.
2. We then need to associate the file to a new component or any other component already existing in the msi. In my case I am creating a new component.
3. We then have to associate this components to a feature in the FeatureComponents table.
4. Since the file I am adding is a non-versioned file, a new row also has to be added to the MSIFILEHASH table.
I could see the changes that I have done using the mst. But when I try to install the msi with the mst, I get the error 2725. I checked everything. All the other steps except for the file addition works fine.
To check whether I am indeed right, I have did this.
Skipped the file addition part to the msi. Every other change that I make works and I am able to install the msi with the mst successfully.
For obvious security reasons I will not be able to share the vbscript with you. If you guys think, that this is not a right forum for this question, please let me know the right forum. I have been stuck with this issue from the past 6 months. Any help would
really be appreciated.

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